/Engine/Source/Editor/MaterialEditor/Public/MaterialEditorUtilities.h
Retrieves all visible parameters within the material.
static void GetVisibleMaterialParameters ( const [UMaterial](API\Runtime\Engine\Materials\UMaterial) * Material, [UMaterialInstance](API\Runtime\Engine\Materials\UMaterialInstance) * MaterialInstance, [TArray](API\Runtime\Core\Containers\TArray)< [FMaterialParameterInfo](API\Runtime\Engine\FMaterialParameterInfo) > & VisibleExpressions )